气候变化领域集成服务门户(CCPortal): Dry deposition fluxes of inorganic nitrogen and phosphorus in atmospheric aerosols over the Marginal Seas and Northwest Pacific

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DOI	10.1016/j.atmosres.2020.105076
	Dry deposition fluxes of inorganic nitrogen and phosphorus in atmospheric aerosols over the Marginal Seas and Northwest Pacific
	Qi J.; Yu Y.; Yao X.; Gang Y.; Gao H.
发表日期	2020
ISSN	0169-8095
卷号	245
英文摘要	To improve estimation of the dry deposition flux (Fd) of nitrogen and phosphorus over the ocean, the concentrations of NO2−, NO3−, NH4+, and PO43− in aerosol particles were measured from 2005 to 2017, and their deposition rates (Vd) were modeled over the marginal seas of China and the northwest Pacific (NWP). Combined with the modeled rates and the measured size distribution, the Vd values of NO2−, NO3−, NH4+, and PO43− over the studied ocean region were calculated to at 0.92 ± 0.06, 0.95 ± 0.08, 0.68 ± 0.03 and 0.65 ± 0.06 cm·s−1 on average, respectively. The spatial variation in Vd for these species was dependent on the wind speed and mass concentration size distribution. Based on the multiyear observations over the region, the average concentrations of atmospheric NO2−, NO3−, NH4+, and PO43− were 2.07 ± 1.58 nmol·m−3, 58.5 ± 44.3 nmol·m−3, 107.9 ± 56.7 nmol·m−3 and 1.13 ± 1.10 nmol·m−3, respectively. The estimated Fd of NO2− was lower than 1 μmol·m2·d−1 in most ocean regions, although the Fd of NO3−, NH4+ and PO43− were 42.74 ± 25.02, 57.40 ± 29.50 and 0.66 ± 0.72 μmol·m2·d−1, respectively. Except for the South China Sea, the Fd values of NO3− and NH4+ were 3–6 times higher over the marginal seas than the NWP while the PO43− flux was only high over the Yellow and Bohai Seas. The dissolved N/P ratio influx varied from 84 to 338, indicating that N was equivalent to the relative abundance of P during the atmospheric input to the China marginal seas and the NWP. Our results showed that the long-term input of atmospheric anthropogenic nutrients would cause different influences on the stoichiometric ratios of nutrients and primary productivity between marginal seas and open ocean. © 2020 Elsevier B.V.
关键词	Deposition rates Nitrogen Nitrogen oxides Nutrients Oceanography Phosphorus Size distribution Wind Atmospheric inputs Average concentration Dry deposition fluxes Nitrogen and phosphorus Primary productivity Relative abundance Spatial variations Stoichiometric ratio Atmospheric aerosols aerosol composition aerosol formation concentration (composition)dry deposition nitrogen phosphorus relative abundance spatial variation Bohai Sea Pacific Ocean Pacific Ocean (Northwest)South China Sea Yellow Sea
语种	英语
来源机构	Atmospheric Research
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/132375
推荐引用方式 GB/T 7714	Qi J.,Yu Y.,Yao X.,et al. Dry deposition fluxes of inorganic nitrogen and phosphorus in atmospheric aerosols over the Marginal Seas and Northwest Pacific[J]. Atmospheric Research,2020,245.
APA	Qi J.,Yu Y.,Yao X.,Gang Y.,&Gao H..(2020).Dry deposition fluxes of inorganic nitrogen and phosphorus in atmospheric aerosols over the Marginal Seas and Northwest Pacific.,245.
MLA	Qi J.,et al."Dry deposition fluxes of inorganic nitrogen and phosphorus in atmospheric aerosols over the Marginal Seas and Northwest Pacific".245(2020).